A provisional list of speakers provided by UN officials, who said that could change at the last minute, indicated that President Biden would be in attendance, for what would be his first speech as president before the world body of 193 members.
Mr. Biden, contrary to the isolationist views of his predecessor, Donald J. Trump, is a fan of the United Nations, and diplomats say a personal appearance would reinforce his “America is Back” pledge.
The White House has yet to clarify Mr. Biden’s plans.
According to the provisional list, top leaders from Brazil, Britain, Canada, India, Ireland, Israel, Italy, Japan, Mexico, Pakistan, Turkey and Venezuela are planning also to personally deliver their speeches, all of which are scheduled for the second week. The speech of China will be delivered by its Deputy Prime Minister, according to the list indicated, and that of Russia by its Minister of Foreign Affairs, Sergei V. Lavrov.
Iran’s new president has chosen to send a pre-recorded video, but diplomats have said the country’s new foreign minister is expected to attend.
Each delegation in the General Assembly Hall will have up to five members, up from two in 2020, when speeches from all member state leaders were delivered via a pre-recorded video on a large screen to largely empty seats. The lack of spontaneity, physical contact and unscripted encounters have created an artificial and stilted atmosphere that participants want to avoid reproducing.